Re: gEDA-user: General Layers questions

[Stephan Boettcher <boettcher@xxxxxxxxxxxxxxxxxx>]

Martin Kupec <martin.kupec@xxxxxxxxx> writes:

> On Fri, Mar 18, 2011 at 09:00:04PM +0100, Stephan Boettcher wrote:
>> Martin Kupec <martin.kupec@xxxxxxxxx> writes:
>> > That is a bit complicated. I need a clean definition of layer types, so
>> > one can pick the right layer when needed. But some attributes in
>> > addition to layer type are possible.
>> 
>> I do not understand that argument.
>
> Ok. We probably don't understand each other, so I will just state my fears.
>
> I would like to know about each drawing layer where it belongs to.
>
> If layers types would be defined by attributes, someone would be able to
> declare one layer both as conductive and as silk for example. That could
> cause me a nighmares. That is why I insist on 'typed' layers, not
> 'tagged' layer.

Hmm.  I think that is the old trap of overloading.  When you say that a
layer type defines what you can do with it, then this one type attribute
becomes messily overloaded.

-- 
Stephan



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